Which Statement Does NOT Describe a Feature of the E

Which statement does NOT describe a feature of the E. coli GroEL/GroES chaperonin system?

A) The conformational changes in GroEL/GroES do not require external energy input.
B) An unfolded protein binds to the hydrophobic surface of the GroEL chamber.
C) Constraining a protein inside the GroEL chamber restricts the conformational space a protein can explore while folding.
D) Constraining a protein inside the GroEL chamber prevents protein aggregation.
E) All of these function in the process of the GroEL/GroES chaperonin.